DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms(Trouble diagnosis content) | DTC detection condition | |
| U0404 | Communication error (invalid) (Lost Communication With SCU) | Diagnosis condition | When the ignition switch is ON |
| Signal | CAN communication signal | ||
| Threshold | TCM is unable to receive the CAN communications signal from electric shift control module | ||
| Diagnosis delay time | Continuously for 0.1 seconds or more | ||
POSSIBLE CAUSE
- Electric shift control module
- Harness or connector (CAN communication line is open or shorted)
FAIL-SAFE
Powertrain becomes neutral